3-(2-Chloro-6-fluorophenyl)isoxazole-5-carboxylic acid CAS 1038715-02-4

Purity 97%+In StockPharmaceutical Standards
CAS No.1038715-02-4
Molecular FormulaC10H5ClFNO3
Molecular Weight241.60 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3-(2-Chloro-6-fluorophenyl)isoxazole-5-carboxylic acid CAS 1038715-02-4 chemical structure

Description

The occurrence of 3-(2-Chloro-6-fluorophenyl)isoxazole-5-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies 3-(2-Chloro-6-fluorophenyl)isoxazole-5-carboxylic acid (CAS 1038715-02-4), a certified reference material (molecular formula C10H5ClFNO3, MW 241.60 g/mol) for analytical method development and quality control.

3-(2-Chloro-6-fluorophenyl)isoxazole-5-carboxylic acid (C10H5ClFNO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC10H5ClFNO3
Molecular Weight241.60 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1988
Halogen ContentF/Cl-containing
Nitrogen Atoms1

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